| City: | Washington, District of Columbia |
| Names to Avoid: | Internal Revenue Service |
| County: | District Of Columbia County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:06:07 AM |
| Population: | No Population Data |
| Area Codes: | 202 / 771 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 38.8923, -77.0265 |
| Quick Link: |
The Internal Revenue Service national headquarters operates under dedicated ZIP code 20224 in the Federal Triangle section of Washington, D.C. The IRS is the nation's tax collection agency, processing over 150 million individual tax returns annually and collecting more than $4 trillion in gross taxes. The IRS Building on Constitution Avenue, completed in 1935, is one of the largest office buildings in Washington.
Postal records identify a delivery point at the Internal Revenue Service on Constitution Avenue within the Federal Triangle neighborhood. This boundary-defined designation covers 0.02 square miles. The USPS established the agency alias in October 2008. Census County Business Patterns reports 5 establishments with 110 employees at this ZIP. Census demographic data is not available for this federal headquarters designation. Washington serves as the valid mailing city.
| Establishments: | 5 |
| Employment: | 110 |
| Residential: | 0 |
| Business: | 1 |
Buildings registered in the USPS ZIP+4 database with designated codes for direct mail delivery.
ZIP Code 20224 supports both business and residential activity. According to the Business Census (2024), there are 5 business establishments, employing about 87 people with an annual payroll of $24,015,000. USPS data shows 0 residential mailboxes and 1 business mailboxes, reflecting local delivery coverage.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 1Source: USPS |
| Total Delivery Receptacles: | 1Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 5Source: CBP |
| 1st Quarter Payroll: | $4,523,000Source: CBP |
| Annual Payroll: | $24,015,000Source: CBP |
| # of Employees: | 87Source: CBP |
ZIP Code 20224 is located in District Of Columbia County, District of Columbia, within the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area (CBSA 47900) and District of Columbia's 98th Congressional District. This Metro area has a population of 6,263,796 people, about 0.00% of whom live in ZIP Code 20224, and is subdivided into the Washington, DC-MD division. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Washington-Arlington-Alexandria, DC-VA-MD-WVSource: Census |
| CBSA Number: | 47900Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Washington, DC-MD (CBSA Div 47764)Source: Census |
| CBSA Population: | 6,263,796Source: Census |
| MSA: | Washington-Baltimore, DC-MD-VA-WV CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 98Source: USPS |
| Congressional Land Area: | 61.40 sq miSource: Census |
| PMSA: | Washington, DC-MD-VA-WV PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1150000Source: Census |
| Place Name: | Washington city; District of ColumbiaSource: Census |
We could not locate which school district 20224 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.